Buggy code:
public void providedLongField ( PersistenceCapable pc , int field , long curVal ) { } public void providedObjectField ( PersistenceCapable pc , int field , Object curVal ) { } public void providedShortField ( PersistenceCapable pc , int field , short curVal ) { } public void providedStringField ( PersistenceCapable pc , int field , String curVal ) { } public boolean replaceBooleanField ( PersistenceCapable pc , int field ) { } public byte replaceByteField ( PersistenceCapable pc , int field ) { } public char replaceCharField ( PersistenceCapable pc , int field ) { } public double replaceDoubleField ( PersistenceCapable pc , int field ) { } public float replaceFloatField ( PersistenceCapable pc , int field ) { } public int replaceIntField ( PersistenceCapable pc , int field ) { } public long replaceLongField ( PersistenceCapable pc , int field ) { } public Object replaceObjectField ( PersistenceCapable pc , int field ) { } public short replaceShortField ( PersistenceCapable pc , int field ) { } public String replaceStringField ( PersistenceCapable pc , int field ) { } public boolean fetchBoolean ( int field ) { } public boolean fetchBooleanField ( int field ) { } public byte fetchByte ( int field ) { } public byte fetchByteField ( int field ) { } public char fetchChar ( int field ) { } public char fetchCharField ( int field ) { } public double fetchDouble ( int field ) { } public double fetchDoubleField ( int field ) { } public float fetchFloat ( int field ) { } public float fetchFloatField ( int field ) { } public int fetchInt ( int field ) { } public int fetchIntField ( int field ) { } public long fetchLong ( int field ) { } public long fetchLongField ( int field ) { } public Object fetchObject ( int field ) { } public Object fetchObjectField ( int field ) { } public short fetchShort ( int field ) { } public short fetchShortField ( int field ) { } public String fetchString ( int field ) { } public String fetchStringField ( int field ) { } public void storeBoolean ( int field , boolean externalVal ) { } public void storeBooleanField ( int field , boolean curVal ) { } public void storeByte ( int field , byte externalVal ) { } public void storeByteField ( int field , byte curVal ) { } public void storeChar ( int field , char externalVal ) { } public void storeCharField ( int field , char curVal ) { } public void storeDouble ( int field , double externalVal ) { } public void storeDoubleField ( int field , double curVal ) { } public void storeFloat ( int field , float externalVal ) { } public void storeFloatField ( int field , float curVal ) { } public void storeInt ( int field , int externalVal ) { } public void storeIntField ( int field , int curVal ) { } public void storeLong ( int field , long externalVal ) { } public void storeLongField ( int field , long curVal ) { } public void storeObject ( int field , Object externalVal ) { } public void storeObjectField ( int field , Object curVal ) { } public void storeShort ( int field , short externalVal ) { } public void storeShortField ( int field , short curVal ) { } public void storeString ( int field , String externalVal ) { } public void storeStringField ( int field , String curVal ) { } private void storeField ( int field , Object val , FieldManager fm ) { } void eraseFlush ( ) { } void setLoaded ( boolean val ) { } void setDirty ( boolean val ) { } void clearFields ( ) { } void saveFields ( boolean immediate ) { } private void saveField ( int field ) { } void clearSavedFields ( ) { } public SaveFieldManager getSaveFieldManager ( ) { } void restoreFields ( ) { } void proxyFields ( boolean reset , boolean replaceNull ) { <START_BUG> if ( ( getBroker ( ) . getAutoDetach ( ) ) != ( AutoDetach . DETACH_NONE ) ) <END_BUG> return ; if ( replaceNull ) replaceNull = ! ( _broker . getConfiguration ( ) . supportedOptions ( ) . contains ( OPTION_NULL_CONTAINER ) ) ; lock ( ) ; try { for ( FieldMetaData fmd : _meta . getProxyFields ( ) ) { int index = fmd . getIndex ( ) ; if ( _loaded . get ( index ) ) { provideField ( _pc , _single , index ) ; if ( _single . proxy ( reset , replaceNull ) ) { replaceField ( _pc , _single , index ) ; } else { _single . clear ( ) ; } } } } finally { unlock ( ) ; } } void unproxyFields ( ) { } void preFlush ( boolean logical , OpCallbacks call ) { } void preDelete ( ) { } void cascadeDelete ( OpCallbacks call ) { } void cascadePersist ( OpCallbacks call ) { } boolean loadFields ( BitSet fields , FetchConfiguration fetch , int lockLevel , Object sdata ) { } protected void loadField ( int field , int lockLevel , boolean forWrite , boolean fgs ) { } void provideField ( PersistenceCapable pc , FieldManager store , int field ) { } void replaceField ( PersistenceCapable pc , FieldManager load , int field ) { } private void setLoaded ( int field , boolean isLoaded ) { } private void postLoad ( int field , FetchConfiguration fetch ) { } private boolean postLoad ( String fgName , FetchConfiguration fetch ) { } private boolean syncVersion ( Object sdata ) { } public boolean isVersionCheckRequired ( ) { } void setCheckVersion ( boolean versionCheck ) { } public boolean isVersionUpdateRequired ( ) { } void setUpdateVersion ( boolean versionUpdate ) { }

Fix:
if ( ( getBroker ( ) . getAutoDetach ( ) ) == ( AutoDetach . DETACH_NONE ) )